US3721726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an integrally molded applicator and valve therefor
Assignee: Individual
•
Filing: 1971-02-16
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Granted: 1973-03-20
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Expires: 1991-02-16
Abstract
Abstract A method of forming a fluid applicator comprising a retainer ring having a projecting portion provided with an opening therein and having a tapered flange surrounding the opening. Integral with the retainer ring is a valve assembly including a valve head and helical springs. The applicator is made through the steps of a one-piece molding after which the valve head is shaped and finished simultaneously with the swaging of a tapered flange to form a valve seat. Thereafter, the projecting portion in the form of a squeezeable container is filled and has its end crimped.
Inventors
- 👤 G Schwartzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:33
CPC Classifications
B; B29; B29C; B29C57/00; A; A47; A47L; A47L23/00; A47L23/04; A47L23/05; A61; A61M; A61M35/00; A61M35/003; B65; B65D; B65D47/00; B65D47/42; B29L; B29L2031/00; B29L2031/725; B29L2031/7252; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
A method of making a fluid applicator comprising the steps of integrally molding in one piece a retaining ring having a projecting portion and having an opening therein surrounded by a peripheral flange and having a valve assembly including a valve head and helical springs integral with said valve head and said projecting portion, thereafter applying a heated die to engage said flange and said valve head and swaging said flange inwardly and finishing the surface thereof to form an inwardly turned valve seat while simultaneously shaping and finishing said valve head while compressing said springs and holding said valve head downwardly of said valve seat, thereafter, releasing said valve head and springs so that said valve head seats against said valve seat.
Claim 2
Independent Claim
123 words
A method of making a fluid applicator comprising the steps of integrally molding in one piece a retaining ring having a projecting portion and having an opening therein surrounded by a peripheral flange and having a valve assembly including a valve head and helical springs integral with said valve head and said projecting portion, thereafter applying a heated die to engage said flange and said valve head and swaging said flange inwardly and finishing the surface thereof to form an inwardly turned valve seat while simultaneously shaping and finishing said valve head while compressing said springs and holding said valve head downwardly of said valve seat, thereafter, releasing said valve head and springs so that said valve head seats against said valve seat.
Claim 3
Dependent Claim
30 words
A method according to claim 1, including the further step of filling said projecting portion with a substance, and thereafter closing the end of said projecting portion opposite said flange.
Claim 4
Dependent Claim
29 words
A method according to claim 1, including subsequently filling said projecting portion with a substance, and thereafter crimping said projecting portion to close said substance in said projecting portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |